+Jacky and Leonard, Ranjani Hi Alexandre,
> From: Alexandre Bailon [mailto:abai...@baylibre.com] > > This series implements busfreq, a framework used in MXP's tree to scale the > interconnect and dram frequencies. > In the vendor tree, device's driver request for a performance level, which is > used to scale the frequencies. > This series implements it using the interconnect framework. > Devices' driver request for bandwidth which is use by busfreq to determine a > performance level, and then scale the frequency. > > Busfreq is quite generic. It could be used for any i.MX SoC. > A busfreq platform driver just have to define a list of interconnect nodes, > and > some OPPs. > It's really great to see this patch series. And it should be the correct direction we're heading to upstream busfreq support. > This series is sent as RFC mostly because the current support of i.MX SoC > won't > benefit of busfreq framework, because the clocks' driver don't support > interconnect / dram frequency scaling. > As exemple, this series implements busfreq for i.MX8MM whose upstreaming > is in progress. Because this relies on ATF to do the frequency scaling, it > won't > be hard make it work. > How can I test this patch series? Any additional patches you can share with us? Or what else we need to do to test it? We can help with it. Regards Dong Aisheng > As exemple, this series implements busfreq for Alexandre Bailon (3): > drivers: interconnect: Add a driver for i.MX SoC > drivers: interconnect: imx: Add support of i.MX8MM > dt-bindings: interconnect: Document fsl,busfreq-imx8mm bindings > > .../bindings/interconnect/imx8mm.txt | 24 + > drivers/interconnect/Kconfig | 1 + > drivers/interconnect/Makefile | 1 + > drivers/interconnect/imx/Kconfig | 17 + > drivers/interconnect/imx/Makefile | 2 + > drivers/interconnect/imx/busfreq-imx8mm.c | 132 ++++ > drivers/interconnect/imx/busfreq.c | 570 > ++++++++++++++++++ > drivers/interconnect/imx/busfreq.h | 123 ++++ > include/dt-bindings/interconnect/imx8mm.h | 37 ++ > 9 files changed, 907 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/interconnect/imx8mm.txt > create mode 100644 drivers/interconnect/imx/Kconfig create mode > 100644 drivers/interconnect/imx/Makefile create mode 100644 > drivers/interconnect/imx/busfreq-imx8mm.c > create mode 100644 drivers/interconnect/imx/busfreq.c > create mode 100644 drivers/interconnect/imx/busfreq.h > create mode 100644 include/dt-bindings/interconnect/imx8mm.h > > -- > 2.19.2
